http://packetstormsecurity.org/UNIX/admin/xscreensaver-4.16.tar.gz

[xscreensaver] / hacks / glx / tunnel_draw.h

extern void DrawTunnel(int do_texture, int do_light, GLuint *textures);
extern void SplashScreen(int do_wire, int do_texture, int do_light);
extern void InitTunnel(void);